138855185713377 has 144 divisors (see below), whose sum is σ = 247050051131520. Its totient is φ = 77692541084928.

The previous prime is 138855185713369. The next prime is 138855185713457. The reversal of 138855185713377 is 773317581558831.

138855185713377 is a `hidden beast` number, since 1 + 3 + 8 + 8 + 5 + 5 + 18 + 571 + 3 + 37 + 7 = 666.

It is not a de Polignac number, because 138855185713377 - 2³ = 138855185713369 is a prime.

It is a super-2 number, since 2×138855185713377² (a number of 29 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (138855185713367) by changing a digit.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 108515403 + ... + 109787535.

It is an arithmetic number, because the mean of its divisors is an integer number (1715625355080).

Almost surely, 2^{138855185713377} is an apocalyptic number.

It is an amenable number.

138855185713377 is a deficient number, since it is larger than the sum of its proper divisors (108194865418143).

138855185713377 is a wasteful number, since it uses less digits than its factorization.

138855185713377 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1272354 (or 1272335 counting only the distinct ones).

The product of its digits is 592704000, while the sum is 72.

The spelling of 138855185713377 in words is "one hundred thirty-eight trillion, eight hundred fifty-five billion, one hundred eighty-five million, seven hundred thirteen thousand, three hundred seventy-seven".